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NCV2951 PDF даташит

Спецификация NCV2951 изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Low Power Low Dropout Voltage Regulator».

Детали детали

Номер произв NCV2951
Описание Low Power Low Dropout Voltage Regulator
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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NCV2951 Даташит, Описание, Даташиты
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LP2950, LP2951, NCV2951
100 mA, Low Power Low
Dropout Voltage Regulator
The LP2950 and LP2951 are micropower voltage regulators that are
specifically designed to maintain proper regulation with an extremely
low input−to−output voltage differential. These devices feature a very
low quiescent bias current of 75 mA and are capable of supplying
output currents in excess of 100 mA. Internal current and thermal
limiting protection is provided.
The LP2951 has three additional features. The first is the Error
Output that can be used to signal external circuitry of an out of
regulation condition, or as a microprocessor power−on reset. The
second feature allows the output voltage to be preset to 5.0 V, 3.3 V or
3.0 V output (depending on the version) or programmed from 1.25 V
to 29 V. It consists of a pinned out resistor divider along with direct
access to the Error Amplifier feedback input. The third feature is a
Shutdown input that allows a logic level signal to turn−off or turn−on
the regulator output.
Due to the low input−to−output voltage differential and bias current
specifications, these devices are ideally suited for battery powered
computer, consumer, and industrial equipment where an extension of
useful battery life is desirable. The LP2950 is available in the three
pin case 29 and DPAK packages, and the LP2951 is available in the
eight pin dual−in−line, SOIC−8 and Micro8 surface mount packages.
The ‘A’ suffix devices feature an initial output voltage tolerance
± 0.5%.
Features
Pb−Free Packages are Available
Low Quiescent Bias Current of 75 mA
Low Input−to−Output Voltage Differential of 50 mV at 100 mA and
380 mV at 100 mA
5.0 V, 3.3 V or 3.0 V ±0.5% Allows Use as a Regulator or Reference
Extremely Tight Line and Load Regulation
Requires Only a 1.0 mF Output Capacitor for Stability
Internal Current and Thermal Limiting
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
LP2951 Additional Features
Error Output Signals an Out of Regulation Condition
Output Programmable from 1.25 V to 29 V
Logic Level Shutdown Input
(See Following Page for Device Information.)
http://onsemi.com
TO−92
Z SUFFIX
CASE 29
1
23
Pin: 1. Output
2. Ground
3. Input
DPAK
DT SUFFIX
CASE 369C
12
3
PIN CONNECTIONS
4
12 3
Pin: 1. Input
2. Ground
3. Output
(Top View)
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
SOIC−8
D SUFFIX
CASE 751
8
1
PDIP−8
N SUFFIX
CASE 626
Micro8E
DM SUFFIX
CASE 846A
8
1
8
1
PIN CONNECTIONS
Output 1
Sense 2
Shutdown 3
GND 4
8 Input
7 Feedback
6 VO Tap
5 Error Output
(Top View)
ORDERING & MARKING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on pages 14 and 16 of this data sheet.
See general marking information in the device marking
section on page 18 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
December, 2006 − Rev. 19
1
Publication Order Number:
LP2950/D









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NCV2951 Даташит, Описание, Даташиты
LP2950, LP2951, NCV2951
DEVICE INFORMATION
Output Voltage
Package
3.0 V
3.3 V
5.0 V
Adjustable
TO−92
Suffix Z
LP2950CZ−3.0
LP2950ACZ−3.0
LP2950CZ−3.3
LP2950ACZ−3.3
LP2950CZ−5.0
LP2950ACZ−5.0
Not
Available
DPAK
Suffix DT
LP2950CDT−3.0
LP2950ACDT−3.0
LP2950CDT−3.3
LP2950ACDT−3.3
LP2950CDT−5.0
LP2950ACDT−5.0
Not
Available
SOIC−8
NCV2951ACD−3.3R2 NCV2951ACDR2
NCV2951CDR2
SOIC−8
Suffix D
LP2951CD−3.0
LP2951ACD−3.0
LP2951CD−3.3
LP2951ACD−3.3
LP2951CD
LP2951ACD
LP2951CD
LP2951ACD
Micro8
Suffix DM
LP2951CDM−3.0
LP2951ACDM−3.0
LP2951CDM−3.3
LP2951ACDM−3.3
LP2951CDM
LP2951ACDM
LP2951CDM
LP2951ACDM
DIP−8
Suffix N
LP2951CN−3.0
LP2951ACN−3.0
LP2951CN−3.3
LP2951ACN−3.3
LP2951CN
LP2951ACN
LP2951CN
LP2951ACN
LP2950Cx−xx / LP2951Cxx−xx
1% Output Voltage Precision at TA = 25°C
LP2950ACx−xx / LP2951ACxx−xx 0.5% Output Voltage Precision at TA = 25°C
Operating Ambient
Temperature Range
TA = −40° to +125°C
TA = −40° to +125°C
TA = −40° to +125°C
TA = −40° to +125°C
TA = −40° to +125°C
TA = −40° to +125°C
Battery or
Unregulated DC
Input
3
182 k
Error Amplifier
1.23 V
Reference
GND 2
60 k
Output
5.0 V/100 mA
1 1.0 mF
LP2950CZ−5.0
Battery or
Unregulated DC
Input 8
Output 1
Shutdown
From 3 60 k
CMOS/TTL
50 k
Error
Amplifier
1.23 V
Reference
GND 4
Sense 2
182 k
60 k
1.0 mF
VO Tap
6
7
Feedback
5.0 V/100 mA
330 k
75 mV/
60 mV
Error Detection
Comparator
Error
Output
5
To CMOS/TTL
LP2951CD or CN
This device contains 34 active transistors.
Figure 1. Representative Block Diagrams
http://onsemi.com
2









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NCV2951 Даташит, Описание, Даташиты
LP2950, LP2951, NCV2951
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Rating
Symbol
Value
Unit
Input Voltage
VCC 30 Vdc
Peak Transient Input Voltage (t < 20 ms)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPower Dissipation and Thermal Characteristics
VCC 32 Vdc
Maximum Power Dissipation
PD Internally Limited W
Case 751(SOIC−8) D Suffix
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
RqJA
RqJC
180 °C/W
45 °C/W
Case 369A (DPAK) DT Suffix (Note 1)
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
RqJA
RqJC
92 °C/W
6.0 °C/W
Case 29 (TO−226AA/TO−92) Z Suffix
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 626 N Suffix
RqJA
RqJC
160 °C/W
83 °C/W
Thermal Resistance, Junction−to−Ambient
Case 846A (Micro8) DM Suffix
RqJA
105 °C/W
Thermal Resistance, Junction−to−Ambient
RqJA
240 °C/W
Feedback Input Voltage
Vfb
−1.5 to +30
Vdc
Shutdown Input Voltage
Vsd
−0.3 to +30
Vdc
Error Comparator Output Voltage
Verr
−0.3 to +30
Vdc
Operating Ambient Temperature Range
TA
−40 to +125
°C
Maximum Die Junction Temperature Range
TJ
+150
°C
Storage Temperature Range
Tstg
−65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
http://onsemi.com
3










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Номер в каталогеОписаниеПроизводители
NCV2951Low Power Low Dropout Voltage RegulatorON Semiconductor
ON Semiconductor

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